baber/WOPTO huggingface dataset:
Patent GB-343471-A (GB)
Title: Automatic fog signalling and safety apparatus for railways
IPC: B61L5/22
Filed: 1930-08-22
Abstract: 343,471. Detonator apparatus for railway signalling. W RIGHT, W. D., Manor House, Garswood, near Wigan. Aug. 22, 1930, No. 35744/29. [Class 105.] A treadle bar is connected at one end to a detonator apparatus and at the other end to a toggle mechanism operated in conjunction with a signal or level-crossing gate so that the treadle is raised into operating position when the signal or gate is at danger. The toggle comprises a link 5 which is pivoted on a crank 4 on a shaft 2 operated by the signal wire and weighted bell crank 1 and has an extension 6 to engage the shaft 2, so that in the position shown in full lines in Fig. 4, which is just beyond the top dead centre, depression of the treadle 7 moves only the left-hand end thereof. This end is connected to an arm 9 on a rock shaft 10 which through a lever 11 and pawl 14 engaging in holes 15 moves step by step a plate 16 which receives detonators from a magazine 47 and places them beneath a spring hammer 23 actuated by a cam and a pawl 20 also on the shaft 10. The lever 11 on the rock shaft 10 has pivoted thereto a spindle 25 provided with a detent 30, so that after movement thereof through a hole in a plate 29 the spindle 25 and therefore the lever 11 and the detonator apparatus are held until the detent 30 is raised by a cam 31 which is operated by a connection 34 to the shaft 2 when the signal is put to " clear " ; the return movement of the spindle 25 is effected by a spring 26. When the signal is at "clear" the treadle 7 and toggle link 5 occupy the dotted position, Fig. 4, so that the treadle is not operated by the train. The accurate positioning of the detonator plate 16 is effected by means of a weighted lever 38 with a finger engaging a slot 15 in the plate to prevent reverse movement and by shaping a part of the bearing surface of the pawl, 14 concentric with the rock shaft 10. When the treadle is in the inoperative position the detonator plate is held by a finger 39 on the rock shaft 10.
Patent GB-1071618-A (GB)
Title: Sail
IPC: B63H9/06
Filed: 1964-09-01
Abstract: 1,071,618. Sails. J. R. LANE (Boston Safe Deposit & Trust Co., and B. E. Barnard). Sept. 1, 1964, No. 35744/64. Heading B7V. A sail for a sailboat has a luff edge portion foldable into tubular form around a stay of the boat and two continuous, separable and interengageable fastening means for securing the luff edge portion in tubular form around the stay, one of the fastening means being secured along the luff edge and the other fastening means being secured to a surface of the sail inwardly of and spaced from the first fastening means.
Patent GB-1318478-A (GB)
Title: Cephalexin salts
Inventor: MASSEY E H
IPC: G21K1/02
Filed: 1971-07-29
Abstract: 1318478 Cephalexin sulphonates ELI LILLY & CO 29 July 1971 [29 July 1970] 35763/71 Heading C2A  Novel sulphonates of 7 - [D - 2<SP>1</SP> - phenyl - 2<SP>1</SP> - amino - acetamido] - desacetoxycephalosporanic acid (i.e. cephalexin) which are cephalexin 1-naphthol-5-sulphonate of Formula (I) dicephalexin anthraquinone-1,5-disulphonate of Formula (II) and cephalexin anthraquinone-2-sulphonate of Formula (III) are prepared by adding an alkali metal salt of the appropriate sulphonic acid to an acidified aqueous solution of cephalexin, resulting in the precipitation of the desired cephalexin salt. The alkali metal salt, preferably a sodium salt, may be added as an aqueous solution or as a solid. A dilute mineral acid, e.g. HCl, is used to prepare the cephalexin solution. The products are precipitated in the hydrated form. Pharmaceutical compositions having antibiotic activity against Gram-positive and -negative bacteria comprise a cephalexin salt of Formula I, II or III above together with a pharmaceutically acceptable carrier. Reference has been directed by the Comptroller to Specification 1,174,335.
Patent GB-453321-A (GB)
Title: Improvements in relation to ice-cream containers
IPC: F25D3/00
Filed: 1935-12-27
Abstract: 453,321. Ice - cream conservers. WALSH, W., 35, High Street, Oswaldtwistle, Lancashire. Dec. 27, 1935, No. 35796. [Class 29] An ice-cream conserver consists of inner and outer casings separated by heat-insulating material and having a heat-insulated cover, the inner casing being formed with recesses for ice containers H inserted through an aperture in the cover. The inner faces of the containers contact with the sides of the cream container D. In a modification, the inner faces of the ice containers are curved to the form of a cylindrical cream container.
Patent GB-1307264-A (GB)
Title: Separation of c8-aromatic mixtures
IPC: C07C7/13
Filed: 1970-07-24
Abstract: 1307264 Separation of C 8 -aromatic mixtures by adsorption ESSO RESEARCH & ENG CO 24 July 1970 [13 Aug 1969 1 Dec 1969] 36008/70 Heading C5E [Also in Division B1] C 8 -aromatics are preferentially adsorbed from mixtures with other C 8 -aromatics in the order p-xylene > ethylbenzene > o-xylene > mxylene by contact under suitable conditions with a Type Y molecular sieve having 75- 99+% Na<SP>+</SP> replaced by K<SP>+</SP>. In the liquid phase, the mixture is suitably contacted with the sieve either diluted in an inert liquid carrier such as pentane or undiluted, liquid carrier being used to flush unadsorbed mixture from the interstices of the sieve, such contact being suitably made at 30-300‹ F., at 10-50 p.s.i.g. and at 0À2-2 wt. feed/hr./wt. sieve. Desorption may be accomplished by vacuum or by solvent displacement, several suitable displacing agents being mentioned, but is preferably performed by means of steam at 300-500‹ F., the desorbate being condensed and separated from the water. If desired, further enrichment and separation of the fractions may be obtained by passing the desorbate through a number of such sorptiondesorption stages. The separation may also be performed in the vapour phase (see Division B1).
Patent GB-155781-A (GB)
Title: Process for the manufacture of preparations of calcium iodide fit for therapeutic purposes
IPC: A61K33/06
Filed: 1920-12-23
Abstract: Compounds of calcium iodide with neutral organic derivatives of ammonia such as ureas or free or linked amino acids, are prepared by mixing aqueous or alcoholic solutions of the iodide and of the organic substance and allowing crystallization to take place; if necessary the mixture may be first refluxed or partially evaporated. Examples are given of the preparation of compounds of calcium iodide with glycocoll, alanine, urea and ethyl urethane. The products are not deliquescent or affected by carbon dioxide, and are intended for therapeutical use.  The Specification as open to inspection under Sect. 91 (3) (a) also describes the preparation of a compound from glycly-glycine. This subject-matter does not appear in the Specification as accepted.
Patent GB-894280-A (GB)
Title: Chain for infinitely variable speed drive
IPC: F16H9/00
Filed: 1960-10-21
Abstract: 894,280. Driving chains. MAURER, A., and BESEL, W. Oct. 21, 1960 [Oct. 23, 1959], No. 36198/60. Class 24. In a chain of the kind in which slats 11 project laterally from the links 7 for engagement with the radially grooved surfaces 2 of conical pulley cheeks, the lower (i.e. radially inner with respect to the pulley) edges of the slats are in direct contact with the lower walls of transversely aligned openings 10 in each of the plates 9 of a link between the apertures accommodating the link pins 8, and the upper edges of the slats are in contact with a coverplate 13 between the slats and the upper walls of the openings 10. The cover-plate, which may be flat or slightly concave towards the slats, is retained by an H-shaped resilient member 14 (Fig. 3) whose longitudinal section is curved as shown in broken lines in Fig. 2 so that its cross-bar engages the slats 11 through an aperture 17 in the cover-plate and the extremities of its limbs retain thrust bars 12 at the ends of the slat pack. Various crosssectional shapes of thrust bar are described, in all of which the surface facing the slats is convex to allow limited pivoting of the slat pack about a transverse axis in passing round the pulley. In one form (Fig. 14, not shown) the thrust bar 12<SP>1</SP> has a relatively sharp apex 26<SP>1</SP> for this purpose. In another form (Fig. 12, not shown) the thrust bars are integral with the cover-plate. The slats 11 are retained against lateral sliding out by the shaping of their ends as seen in Fig. 7.
Patent GB-726530-A (GB)
Title: Improvements in or relating to zinc smelting
IPC: C22B19/36
Filed: 1953-12-30
Abstract: The process claimed in the parent Specification is applied to the distillation of zinc in blast furnaces in which the furnace gases accumulate in and are withdrawn from the top of the furnace above the charge level, the oxygen-containing gas being introduced into this space.  At least a part of the oxygen-containing gas may be introduced below the charge level but above the active smelting zone of the furnace, and a small proportion may be introduced through a pipe into the furnace charging device, e.g. into the charge-holding space between two charging bells.  In a further modification the process may be employed in smelting operation in furnaces other than blast furnaces where the gaseous smelting products contain at least 1.5 per cent of carbon dioxide and where at least 80 per cent of the zinc vapour is condensed to metallic zinc, e.g. in electro-thermic smelting processes.  Specifications 572,961 and 686,542 also are referred to.
Patent GB-1138078-A (GB)
Title: Improvements in or relating to vapour generators
IPC: F23M20/00
Filed: 1966-08-12
Abstract: 1,138,078. Preventing corrosion in flues. BABCOCK & WILCOX Ltd. 12 Aug., 1966 [14 Aug., 1965], No. 36309/66. Heading F4B. Corrosion, in the exhaust flues 3, 5 of a vapour generator, is prevented during idle periods, by passing hot air from a steam heated air heater 7, through them to maintain them at a predetermined minimum temperature. Alternatively, the hot air may be obtained from an adjoining vapour generating unit.
Patent GB-778363-A (GB)
Title: Improvements in electroluminescent lamps
IPC: G04B19/30
Filed: 1953-12-31
Abstract: 778,363. Electroluminescence. SYLVANIA ELECTRIC PRODUCTS, Inc. Dec. 31, 1953 [Dec. 31, 1952], No. 36396/53. Class 39(1). Layers of moisture-pervious material seal the light producing layer of an electroluminescent plaque from the atmosphere and are provided on the plaque and on the inside lining of the lampholder, heat being applied to melt the material and form the seal. The layers may be wax and wax-impregnated polyvinyl chloride respectively. The plaque 10 comprises a transparent base 16 transparent conductive coatings 18, 22 and the luminescent layer 20, covered over by a wax coating 24 and the layers are cut away at 42, 44 to permit contact between the electrodes and metal contact fingers 32, 34. These fingers are connected to base pins 28, 30 projecting through the metal case 26 and a sheet of moistureimpervious wax-containing material 14, rubber grommets 35 insulating the pins. Insulating material 38 covers all but the ends of the fingers. After positioning the plaque within the container 14, 26, the edges of the metal case 26 are rolled over and with the application of heat, wax is squeezed out and seals the rolled over edges and joints. The lamp is employed as a clock face, or as a dial for radio sets and instruments. Specifications 717,171 and 724,977 are referred to.
Patent GB-1279634-A (GB)
Title: Signal compressors and expanders
Inventor: DOLBY RAY MILTON
IPC: H04B1/64
Filed: 1968-11-01
Abstract: 1279634 Companders DOLBY LABORATORIES Inc 20 Oct 1969 [1 Nov 1968 21 July 1969] 51985/68 and 36466/69 Heading H4R Compressor or expander has a signal path including a filter, whose cut off frequency depends on signal level, and a limiter. The signal path output is added to or subtracted from the output of a straight through signal path to provide the expansion or compression. The filter comprises a fixed cut off frequency filter in series with a filter whose cut off frequency is variable with signal level, the cut off frequency being further from one limit of the band than the fixed cut off frequency and moving closer to that limit of the band as the signal level increases. The circuits are developments of ones described in Specification 1,120,541 or Specification 1,253,031. Compresser, Fig. 4, comprises an emitter follower 12 fed from an input terminal 10 and supplying a signal straight to an output terminal 16 via a resistor 14, and to a first filter 20 in series with a second filter 22, the second filter having a f.e.t. as a variable component to control the filter cut off frequency. The filter output feeds, via amplifier 26, a limiter 28 and a control voltage deriving circuit 31, 32, whose output is fed to the gate of f.e.t. 24 in the filter. Expander, Fig. 5 (not shown), is virtually the same as the compresser except that the amplifier 26(a) is made inverting by including an emitter load and taking the signal from that point, and by feeding the filter (20) from the combined output from point 16 rather than the input to the equipment. A modification of the input circuit is described with respect to Fig. 6 (not shown) to provide switching between compresser and expander functions in the same apparatus. A fixed equalizer is described, Fig. 7 (not shown), for providing approximate frequency characteristic equalization of a recording produced using the compressor of Fig. 4. Alternative filter circuit is described with respect to Fig. 10 the circuit having improved phase characteristic under quiescent conditions since the second stage, including the f.e.t. 24, is rendered inoperative when f.e.t. 24 is cut off.
Patent GB-1212656-A (GB)
Title: Ashless lubricant additive
IPC: C07F9/04
Filed: 1969-07-22
Abstract: 1,212,656. Lubricants. E. I. DU PONT DE NEMOURS & CO. 22 July, 1969 [14 Oct., 1968], No. 36716/69. Heading C5F. [Also in Division C3] Lubricating oil and hydraulic fluid compositions comprise products obtained by reacting (A) an amorphous phosphosulphurized ethylene/ propylene/1,4-hexadiene terpolymer of molecular weight distribution less than 8 and weight average molecular weight 3500 to 65,000 and comprising 35 to 70 weight per cent of propylene and 1 to 6 weight per cent 1,4-hexadiene, the balance being ethylene, arid (B) an amine of formula H 2 N(CH 2 ) x NRR 1  where x is 2 or 3 and R and R 1  are C 1-4  alkyl. The additives have VI improving, detergent, anti-corrosion, antioxidant and anti-wear properties and improve the performance of conventional extreme pressure additives. The oils may be paraffinic or naphthenic mineral oils, and the additives may be incorporated in the form of concentrates. In examples reaction products of phosphosulphurized terpolymers and N,N-dimethyl-l,3- propylenediamine are incorporated in mineral oils, optionally with dialkyl dithiophosphates and high base calcium petroleum sulphonates.
Patent GB-1020137-A (GB)
Title: A centre bearing for a motor vehicle propeller shaft
Inventor: PRESTON VERNON
IPC: F16C27/06
Filed: 1964-09-09
Abstract: 1,020,137. Propeller shaft mounting. FORD MOTOR CO. Ltd. Sept. 9, 1964, No. 36832/64. Heading B7H. A motor vehicle propeller shaft has a forward section 1 extending from the gear-box to which it has a sliding connection including a universal joint, and a rear section 3 connected by a universal joint 5 to the forward section 1 and by a universal joint to the differential gear, the rear end of the forward section 1 being supported by a ball or roller bearing 9 mounted with the interposition of a foamed polyurethane member 13 in a housing 11. The member 13 may have lateral or peripheral slots 21 or 23 to increase its resilience and is bonded to a bearing cover member 15 which fits within C-section annular members 19. The member 13 is slidable within the housing 11.
Patent GB-887569-A (GB)
Title: Apparatus for forming brushes
IPC: A46B3/00
Filed: 1958-11-17
Abstract: 887,569. Moulding brushes. VALLIS, J., and DENT, E., [trading as VALDEN CO.]. Nov. 17, 1958 [Jan. 14, 1958], No. 36833/58. Class 87(2). The bristles and backing member of a brush are moulded in one piece in a mould comprising die plates 32 interleaved with and movable relatively to die plates 48, the die plates 32 having closely spaced bristle-forming cavities 39 extending inwardly from one end thereof. The die plates 48 are supported in grooves 47 in a mould head 43 by means of rods 53 passing through the die plates 48 and through spacer bars 51. The mould head 43 is bolted to a block 14 which is bolted to the stationary head 16 of an injection moulding press. The die plates 32 have flanges 33, Fig. 6, which are clamped in a support block 18. The backing member of the brush is moulded in a space 59 defined partly by a mould block 55 carried by a support block 23. The block 23 is connected by spacing members, Fig. 5 (not shown), to a ram head 29 operated by a piston 30. Fig. 2 shows the parts in position for injection moulding through a nozzle 60 and passages 62, 66. The blocks 18, 23 are held together by means of pivoted locking arms 74. After injection, the ram head 29 and blocks 23, 18 are lowered, thus withdrawing the die plates from between the die plates 32. During separation of blocks 14, 23, the locking arms 74 are deflected outwardly to release the block 18 by the engagement of cam rollers 82 on the arms 74 with cam surfaces 83. Block 18 continues to move downwardly under the influence of springs 22 until stopped by the heads of bolts 19 engaging in slots 20 in block 18, (as seen in Fig. 3). A moulded sprue 86 has been withdrawn from the passage 62 by a sprue retaining member 69 secured to a mould base plate 25. This plate 25 continues to move downwardly with the block 23 until posts 26 secured thereto engage a stationary head 16a. Further movement of block 23 then causes ejection of the moulded brush by posts 90 which are secured to the plate 25 and extend slidably through the blocks 23, 55.
Patent GB-944447-A (GB)
Title: Improvements in or relating to cartons
IPC: B65D5/60
Filed: 1961-10-13
Abstract: 944,447. Reclosable cartons; packages. ARMOUR & CO. Oct. 13, 1961 [Oct. 13, 1960], No. 36904/61. -Headings B8C and B8P. A carton comprises an outer part with lid 11, an inner liner 12 with top part 13 and an inner flexible bag 15. To erect the carton the flexible bag is placed inside the liner and both are then placed inside the outer carton, top part 13 is then pushed down to grip the bag between its edge 38 the top 37 of wall 33 and wall 20 of the outer carton. Flap 23 of lid 11 is then placed between walls 18 and 35 of the outer carton and liner respectively so that the top part 16 of the bag is effectively gripped between lid 11 and the top 13 of the liner. Lid 11 may be joined to the outer side walls by gusset folds. The outer carton and liner are made of cardboard or the like and the flexible bag of polythene or a similar waterproof substance.
Patent GB-444133-A (GB)
Title: Improvements in or relating to electric oscillation generating systems and apparatus therefor
IPC: H03K4/10
Filed: 1934-12-24
Abstract: 444,133. Valve generating circuits; television. JOHNSTONE, D. M., and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. Dec. 24, 1934, No. 36944. [Classes 40 (iii) and 40 (v)] An oscillator for generating two sets of saw-tooth oscillations, such as the linefrequency and imagefrequency oscillations used in television, comprises a valve with a single control grid and two independent anodes connected to the respective scanning plates or coils. Fig. 1 shows the valve applied to the generation of saw-toothed potentials. The valve is of pentode type with a single innermost control grid, and with two anodes 2, 3. Relaxation condensers 4, 5 are charged through resistances or constant -current devices 6, 7,and a resistance 8, and are discharged through therespective anode-cathode paths. The resistance 8 biasses the control grid through a de-coupling resistance 10 and condenser 11, and synchronizing pulses are applied to the grid at the terminals 9. These pulses comprise a series of narrow impulses at line-frequency, superposed on an impulse of longer duration at frame frequency. The circuit constants are such as to minimize the undesired discharge of the image-frequency condenser 4 by the line-frequency pulses ; and the anode-cathode impedance for the imagefrequency circuit may be high compared with that for the line-frequency circuit. The synchronizing impulses may be of oscillatory form ; and reaction may be employed between each anode and the control grid in the manner indicated in Specification 435,196. For developing saw-toothed current through scanning coils 12, 14 at line and image frequency respectively, the coils are connected as shown. in Fig. 2 in the separate anode circuits of a triode valve 15, the grid of which is supplied with square-topped impulses of the two frequencies. The triode impedance is low and the current through the inductive coils 12, 14 is of saw-tooth form.
Patent GB-1460989-A (GB)
Title: Hydrometallurgical method for recovering copper values from copper concentrates
IPC: C22B3/06
Filed: 1974-08-23
Abstract: 1460989 Recovering copper values NORANDA MINES Ltd 23 Aug 1974 [30 Aug 1973] 37176/74 Heading C1A Copper values are recovered from copper concentrates by dispersing the concentrate in an aqueous leach solution containing Cl- or Brions to form a slurry, carrying out the leaching operation of the slurry at an elevated temperature and under an overpressure of oxygen with the concentration of the Cl- or Brions being such as to transform a major proportion of the copper values present into a solid basic copper sulphate, separating the leach residue containing said basic copper sul phate from the leach solution and recovering coppervalues from said residue. The source of halogenions in the leach solution may be HCl, NaCl, CaCl 2  NH 4 Cl HBr, NaBr or KBr and the leach solution preferably contains a source of sulphate ions. The preferred leach solution is a mixture of HCl and H 2 SO 4 , said mixture containing at least 25% by weight of HCl. The molar ratio of halogen ions to copper ions in the slurry is preferably greater than 0À08 : 1 and the total amount of acid in the slurry is preferably such that the molar ratio H<SP>+</SP> : Cu is between 0À15 and 0À65 : 1.0. The leaching is suitably carried out at a temperature between 125 and 160 C. under an oxygen partial pressure of at least 180 p.s.i.g., preferably 200 to 300 p.s.i.g. with a pH of between 2À5 and 4À5. The leaching is suitably continued for a period sufficient to effect at least 90% and preferably over 97% conversion of Cu. The concentrates, which may be chalcopyrites, may be dispersed in the leach solution in as-received condition or may be ground for 30 minutes prior to dispersion. Upon separation of the leach residue, the residue is washed to eliminate remaining traces of Cl- or Brions and the values may be recovered from the residue by either selective dissolution of copper in an ammonia or ammonium sulphate solution followed by solvent extraction from the ammoniacal liquor, stripping with H 2 SO 4  and electrowinning from said acid solution or by leaching the residue in dilute H 2 SO 4  and electrowinning. The leach solution is suitably recycled. The leaching operation is preferably controlled so that not more than 40% of the converted copper goes into solution. The residue also contains elemental sulphur and any iron that was in the concentrate.